<template>
    <div :class="prefixCls" :style="getWrapStyle">
        <Spin :spinning="loading" size="large" :style="getWrapStyle">
            <iframe
                    :src="frameSrc"
                    :class="`${prefixCls}__main`"
                    ref="frameRef"
                    @load="hideLoading"
            ></iframe>
        </Spin>
    </div>
</template>
<script lang="ts" setup>
    import type { CSSProperties } from 'vue';
    import { ref, unref, computed } from 'vue';
    import { Spin } from 'ant-design-vue';
    import { useWindowSizeFn } from '/@/hooks/event/useWindowSizeFn';
    import { propTypes } from '/@/utils/propTypes';
    import { useDesign } from '/@/hooks/web/useDesign';
    import { useLayoutHeight } from '/@/layouts/default/content/useContentViewHeight';

    defineProps({
        frameSrc: propTypes.string.def(''),
    });

    const loading = ref(true);
    const topRef = ref(50);
    const heightRef = ref(window.innerHeight);
    const frameRef = ref<HTMLFrameElement>();
    const { headerHeightRef } = useLayoutHeight();

    const { prefixCls } = useDesign('iframe-page');
    useWindowSizeFn(calcHeight, 150, { immediate: true });

    const getWrapStyle = computed((): CSSProperties => {
        return {
            height: `${unref(heightRef)}px`,
        };
    });

    function calcHeight() {
        const iframe = unref(frameRef);
        if (!iframe) {
            return;
        }
        const top = headerHeightRef.value;
        topRef.value = top;
        heightRef.value = window.innerHeight - top;
        const clientHeight = document.documentElement.clientHeight - top;
        iframe.style.height = `${clientHeight}px`;
    }

    function hideLoading() {
        loading.value = false;
        calcHeight();
    }
</script>
<style lang="less" scoped>
    @prefix-cls: ~'@{namespace}-iframe-page';

    .@{prefix-cls} {
        .ant-spin-nested-loading {
            position: relative;
            height: 100%;

            .ant-spin-container {
                width: 100%;
                height: 100%;
                padding: 10px;
            }
        }

        &__mask {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        &__main {
            width: 100%;
            height: 100%;
            overflow: hidden;
            background-color: @component-background;
            border: 0;
            box-sizing: border-box;
        }
    }
</style>
